/** Return a {@link Status} given a canonical error {@link Code} value. */
public static Status fromCodeValue(int codeValue) {
if (codeValue < 0 || codeValue > STATUS_LIST.size()) {
return UNKNOWN.withDescription("Unknown code " + codeValue);
} else {
return STATUS_LIST.get(codeValue);
}
}
@Override
public void cancel(@Nullable String message, @Nullable Throwable cause) {
if (cancelCalled) {
return;
}
cancelCalled = true;
try {
// Cancel is called in exception handling cases, so it may be the case that the
// stream was never successfully created.
if (stream != null) {
Status status = Status.CANCELLED;
if (message != null) {
status = status.withDescription(message);
}
if (cause != null) {
status = status.withCause(cause);
}
if (message == null && cause == null) {
// TODO(zhangkun83): log a warning with this exception once cancel() has been deleted from
// ClientCall.
status =
status.withCause(
new CancellationException("Client called cancel() without any detail"));
}
stream.cancel(status);
}
} finally {
if (context != null) {
context.removeListener(ClientCallImpl.this);
}
}
}
